Insulating-sleeve.



A, AJCHELE. INSULATING SLEEVE. APPLICATION FILED 0e14, 1916.

liatented Mar. 11,1919.

Archaic ALBEET ELIGHELE, F

INSULQEENG-QLEEVIE.

1'0 .rzZZ whom it may 009268770.

Be it known that 'L ALBERT Axe/Kenn citizen of the Swiss Republic, vesicling at No. 10 Wiesenstmsse, Baden, Switzerland, have invented certain new anti useful I721" prove nents in Insulating-Sleeves, which the following is a specification.

Insulating sleeves constri cted as botlies' of revolution with a conceve contoui, g ieve. been found very setlsfactor-y in use for the purpose of preventing discharge over or v 0 n around the ends and along the snriace such sleeves. lnthe monnmcture oi? such sleeves of porcelain for instance, the concave to he coiled shell taper in an exectly determined and continuous manner. Since, however, very great lengths of strip have to be coiled, the requisite preliminary shaping of the p&}')81' obviously presents very considereole difficulties "if the Width of the pope? is taperec in coarse stages, the ceiling produces a pic-- Polity of cylinders of different lengths coiled on one soothe-Fiend these cvlintlens conl'tl he turned down to the 'clesirerl concave con tour. That method however, is accompenier}. difficulties because the lmDTQQILLCCl paper which iscoiled hot; becomes extremely hard, cooling and is' clificult tomechine, While there is considerable Waste.

It has also already been jpzoposecl, -instescl of forming the insulator sleeves ivy ceiling, to form them by pressing in o molzi en insoles inp; materiel composed for instance, of fihei enCl synthetic resin. That method, While at lowing: the formation of a smooth concave surface, is limited. to small insulators (insulators for low voltages) owing" to L the o2:- peiise of large molds and the diiiienlty heating" these uniformly" In the case of large insulators the long inner portion might be formed by coiling fiyecificeticn of Plotters Petenteai Moon iii; ifiifim Applioeticn fiied ilcto'oei: i, 1916. Serial 1W0.

around the central tube, and-the thicxer eno shorter outer portion might be mololcrl around; the said inner portion so that only a smell moltl would be necessary. The formation of smooth concave sonfece will howevcn i'ecnire a turning 01 the junction 0 of the CGllQQ l and the molded portions, which turning operation presents the above stated (liiiicultie I The present inventor has now discovered tint it is not necessary that the concave sur- 6 face shall be smooth; but that it may he stepped 11ml still be efficient.

The present invention now has for its object to provitle on improved insulating sleeve he type licrcinhef inespecified. According to this invention the insulating mettle partly of leyereol material steppecl concave surface.

mt of this invention is illusll igm-c l :1 central lon 'ituflinel section n y I b ov'co lllBlliRi'llfl' sleevecomposecl lavcrecl metci'wi Figs. mofliiicetions composed partly of layered and partly of molded material.

Referring to 1, me improved in' sulating sleeve is composed of cylinders a to a of (liiierent lengths, manner that the stepped sui'i'ace of the concave contoni' of too insulator approximates to the smooth contour represented by the dot and dash line shown in. the figuie. (Z is the co'otlnci'oi; and f is the socket'or holder for 0 the insulating sleeve.

iccorrling" to the modification shown in fig. 2, the insulatingsleeve is composed of tnholai meniber consisting of one or more coilecl tubes a and a niolclccl'me'moei' con 95 sisting of s mass of insulating material I) ipresseoo lTlQlClQtl around the tubular men be? 0:. The'ooncevecontonr 18 formed \vlth one or morestepe. In using a moldod in- The Itootliiication shown in Fig. 3 illus- 105 an insulating we of great Width and smell icngili such n8 is used col-1" 211g ii comioctcr through a, Well ie accompanying drawings in 7 5 2 3 are similar views of two graduated in such a here a In this example the insulating SlSVS-COIH- prises a cylinder a layered around the conductor a l, a plate of layered insulating Ina-- tczial which is supported by the Wall flaml melded l'namber 3') which serves toconnectaml 110M together film-P8115 a and c. The, member Z is formed with tlm concave cuntour which. is continued in the stepped manner "are describml "ng' 110W described. my invention, what ll. cla m as new and desire to secure by LetterS 1 1136111 isr- 1. In an iz'lsulating" slaew the cumbi'nafion m" tubular member compese-d wholly of gg'l'aclua'ted layered insulating material and an outer member composed wholly of molded insulating material, lmving a SI'HOOth :oncamb 0011120111, the joint external. surface 0f the two members Joust-Ruining a steg'lpsdi contour of a concave form.

In an insulating sleeve the o ubina-tim: of a tubular member composed a "(5?fiil insulating material ZU'OIIR'M'l (L ccmducwl and nmnbcr composed of molilm'l insulaiing material, having 21. sun-00th with a: plz ateshzzwsl mel'nlm' oi lzq'ereil insulating material lelcalied between id .moldml member and supportml on an internal gn'ujcction within. the Wall of a. socket or the like.

In msfiimony whereof l have Signed my name to this specificaiiim.

ALB-ET lv itn esses CARL (UBLER7" OLGA AJJRZG.

concave contour 

